Provided is a display apparatus including a first signal receiving unit that receives a non-compressed video signal from an external device via a first transmission path through a plurality of channels by means of a differential signal, an image display unit that displays images by processing the video signal received by the first signal receiving unit, a second signal receiving unit that receives a compressed video signal of a same video source as the non-compressed video signal by using a bi-directional communication path configured by predetermined lines of the first transmission path, and a signal transmitting unit that transmits a compressed video signal corresponding to the compressed video signal received by the second signal receiving unit to another external device different from the external device.
Legal claims defining the scope of protection, as filed with the USPTO.
1. A signal transmitting method for an apparatus including: receiving an uncompressed video signal from an external device via a plurality of channels comprised in a transmission path by a differential signal; transmitting a first signal to the external device via a reserved line and a Hot Plug Detect (HPD) line, which are bi-directional for transmission, comprised in the transmission path by a full duplex communication, in which the reserved line and the HPD line are of a High Definition Multimedia Interface (HDMI) cable and can form another differential signal; receiving a second signal from the external device via the reserved line and the HPD line; subtracting the first signal from the second signal to obtain a third signal; and transmitting a notification of a connection state to the external device by at least one DC bias potential of the reserved line and the HPD line.
2. A signal transmitting method for an apparatus, the method comprising: transmitting an uncompressed video signal to an external device via a plurality of channels comprised in a transmission path by a differential signal; transmitting a first signal to the external device via a reserved line and a Hot Plug Detect (HPD) line, which are bi-directional for transmission, comprised in the transmission path by a full duplex communication, in which the reserved line and the HPD line are of a High Definition Multimedia Interface (HDMI) cable and can form another differential signal; receiving a second signal from the external device via the reserved line and the HPD line; subtracting the first signal from the second signal to obtain a third signal; and receiving a notification of a connection state from the external device by at least one DC bias potential of the reserved line and the HPD line.
3. An apparatus comprising: a first transmitter that transmits an uncompressed video signal to an external device via a plurality of channels comprised in a transmission path by a differential signal; a second transmitter that transmits a first signal to the external device via a reserved line and a Hot Plug Detect (HPD) line, which are bi-directional for transmission, comprised in the transmission path by a full duplex communication, in which the reserved line and the HPD line are of a High Definition Multimedia Interface (HDMI) cable and can form another differential signal; a first receiver that receives a second signal from the external device via the reserved line and the HPD line; a subtracting unit that subtracts the first signal from the second signal to obtain a third signal; and a second receiver that receives a notification of a connection state from the external device by at least one DC bias potential of the reserved line and the HPD line.
Cooperative Patent Classification codes for this invention. Click any code to explore related patents in that topic.
February 27, 2013
October 14, 2014
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